The toughest hurdle here was simple: an engine that had been parked since October 2005, and one that sat outside at the maker's workplace for close to 20 years before that. Waking up machinery after that long is where most people hesitate. The maker handled it methodically, swapping out anything rubber and adding a few upgrades before ever touching the key, which seems like the patient approach this situation demanded. The payoff came fast: three cranks and the motor lit off, then ran with barely a wisp of smoke at first that has since faded to nothing at all.
There is real history in this machine. The engine itself was assembled by the maker back in 2003, and the Impala was bought in 1997, later serving as the daily driver in 2004. The maker's stated goal was to prove that a motor left sitting for over 25 years is not automatically scrap, and the way it caught and settles into that choppy, rhythmic idle makes a strong case. I think the best part is the cam sound, which the maker says brings a bigger smile than smoother alternatives might.
Not everything is finished, though. There is an oil leak at the rear of the intake manifold, plus an exhaust leak where it meets the head, and a handful of other minor issues, none of them touching the motor or transmission. It is also not stated exactly which rubber parts were renewed or what the upgrades involved, so that detail remains open. One observation from the maker rings true to me: had this car been driven all those years, the engine likely would not be in such good shape today. Sometimes parking a car is kinder to it than using it.